Alert archive / Oklahoma / Tornado Warnings in 1999

Tornado Warning 80, NWS Tulsa, OK

June 1, 1999Cherokee County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Jun 1, 1999, 5:12 PM CDT for Cherokee County, Oklahoma. It was in force for 33 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 1, 1999, 5:12 PM CDT (22:12 UTC)
Expired: Jun 1, 1999, 5:45 PM CDT
In force: 33 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Cherokee County, OK

What was reported inside it

Time	Report	Where	Remark
Jun 1, 5:25 PM CDT	Hail 0.75	Lost City, OK
Jun 1, 5:35 PM CDT	Tornado F3	Hulbert, OK	A strong tornado, rated an F3, touched down in far western Cherokee County, possibly as a waterspout on Fort Gibson Lake. The tornado moved south onshore and through the rural Amber Hills housing area, crossing OK Hwy 51, and lifting after tracking through mu

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 1, 3:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.2 hours before the alert went out and 154 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 20 J/kg
Mixed-layer CIN: -321 J/kg
Mixed-layer LCL: 1581 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 261 m²/s²
0-3 km storm-relative helicity: 270 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this tornado warning went out at Jun 1, 3:50 PM CDT, 1 hour 22 minutes earlier.

Area forecast discussion, Jun 1, 3:50 PM CDT, 1 hour 22 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
350 PM CDT TUE JUN 1 1999

PROBLEM(S) OF THE DAY:
WILL STORMS BE SUPERCELLS OR NOT?
POPS

RADAR IS NOW SHOWING CONVECTIVE INITIATION ALONG THE FRONT NEAR I-44
IN NE OK. TSRA SHOULD CONTINUE DEVELOPING SOUTHWEST ALONG THE FRONT
DURING NEXT HOUR OR TWO. WITH SUCH AN EXTREMELY UNSTABLE
ATMOSPHERE...TORNADOES ARE A POSSIBILITY WITH ANY STORM THAT
FORMS...THOUGH MORE FAVORABLE BACKED WINDS ARE IN SE OK. TEMPS IN SE
OK HAVE REACHED THE LOW 90S...SO CONVECTIVE TEMP IS NEAR AND THE CAP
SHOULD BREAK SOON. SPC HAS CALLED TO SAY THEY ARE CONSIDERING TORNADO
WATCH THERE IN NEXT HOUR OR SO. LOOKS LIKE AN ACTIVE EVENING. THE
LOGIC LAID OUT IN THE LATE MORNING DISCUSSION STILL LOOKS GOOD...SO
REFER TO THAT DISC FOR MORE SEVERE WEATHER LOGIC.

THE FRONT WILL CONTINUE TO SAG SOUTH TONIGHT TO NEAR THE RED RIVER.
AS THE FRONT SLOWS DOWN LATE TONIGHT...SOME TRAINING TSRA MAY TAKE
PLACE IN FAR SE OK.  3-HOUR FLASH FLOOD GUIDANCE VALUES DOWN THAT WAY
ARE OVER 2 INCHES...SO WILL HOLD OFF ON FLASH FLOOD WATCH FOR NOW.
EVENING SHIFT MAY WANT TO MONITOR.

AN UNSTABLE ATMOSPHERE WILL PERSIST ON WED AS THE FRONT LINGERS
AROUND THE RED RIVER. WILL INCLUDE POPS EVERYWHERE TMRW WITH THE
HIGHER POPS IN THE SOUTH WITH BETTER MOISTURE AND CONVERGENCE.

BIG UPPER TROF WILL DIG INTO THE WRN STATES AND BRING THE AREA INTO
SOUTHWEST FLOW STARTING LATE WED NGT. SHORTWAVES BEING EJECTED FROM
THE WESTERN TROF WILL LEAVE A CHANCE OF SHRA/TSRA IN THE FCST EACH
DAY FROM THU THRU SUN. THE ETA SHOWS AN MCS MOVING FROM WRN OK THRU
KS ON WED NGT. WILL HAVE HIGHER POPS IN NRN AND WRN ZNS ON WED NGT IN
CASE THE MCS ROUNDS THE TOP OF THE UPPER RIDGE AND HEADS SE INTO THE
FCST AREA. RAIN CHANCES ON SUN LOOK LIKE THE HIGHEST IN THE EXTENDED
FORECAST AS THE WEAKENING UPPER LOW FINALLY MOVES EAST OUT OF THE
SOUTHERN ROCKIES.

FCSTID = 22
TUL   65  86  69  83 /  10  20  40  30
FSM   67  88  67  88 /  40  30  20  30
MLC   65  88  70  86 /  40  30  30  30
BVO   62  86  66  82 /   5  20  50  30
FYV   60  84  62  84 /  40  20  30  30
IDB   69  87  68  88 /  40  40  20  30
BYV   60  85  62  85 /  40  20  30  30
MIO   62  85  63  83 /  30  20  30  30
MKO   65  87  68  85 /  30  30  30  30
F10   65  87  69  85 /  30  20  40  30
HHW   69  87  68  88 /  40  40  20  30

.TUL...
AR...TORNADO WATCH FROM 345 PM CDT TuesdAy UNTIL 1000 PM CDT TuesdAy
FOR ZONES ARZ001>002...ARZ010>011...ARZ019>020...ARZ029.

OK...TORNADO WATCH FROM 345 PM CDT TuesdAy UNTIL 1000 PM CDT TuesdAy
FOR ZONES OKZ057>058...OKZ061>063...OKZ065>072...OKZ074.

--------------------
EXPERIMENTAL OUTPUT:

HAZARDOUS WEATHER EXPECTED NEXT 24 HOURS: GOOD CHANCE SUPERCELL
THUNDERSTORMS
NGM CONFIDENCE:  7 ON A SCALE OF 0 TO 10
ETA CONFIDENCE:  8 ON A SCALE OF 0 TO 10
AVN CONFIDENCE:  8 ON A SCALE OF 0 TO 10
FCST CONFIDENCE: 8 ON A SCALE OF 0 TO 10

In the hours before

Local storm report, Jun 1, 12:06 PM CDT, 5 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1206 PM CDT TUE JUN 01 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0518 AM    3 N WELEETKA              OK    TORNADO
06/01/99   OKFUSKEE                        SPOTTERS REPORTED
                                           TORNADO ON THE GROUND
                                           BETWEEN PHAROAH AND
                                           WELEETKA.

Local storm report, Jun 1, 12:06 PM CDT, 5 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1206 PM CDT TUE JUN 01 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0518 AM    3 N WELEETKA              OK    TORNADO
06/01/99   OKFUSKEE                        SPOTTERS REPORTED
                                           TORNADO ON THE GROUND
                                           BETWEEN PHAROAH AND
                                           WELEETKA.

Special weather statement, Jun 1, 1:15 PM CDT, 3 hours 57 minutes before

ARZ001-002-010-011-019-020-029-OKZ049-053>076-021100-

EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
115 PM CDT TUE JUN 1 1999

THERE WILL BE A RISK OF SEVERE THUNDERSTORMS OVER EASTERN OKLAHOMA AND
NORTHWEST ARKANSAS THIS AFTERNOON AND THIS EVENING.  IN OKLAHOMA...THE
AREA OF CONCERN WILL GENERALLY BE SOUTH AND EAST OF INTERSTATE 44...
BEGINNING AS EARLY AS MID AFTERNOON.  IN ARKANSAS THE THREAT WILL BE
LATE THIS AFTERNOON AND THIS EVENING...ENDING BY AROUND MIDNIGHT.

.SYNOPSIS...
AN UPPER LEVEL LOW PRESSURE AREA WILL HELP PUSH A WEAK COLD FRONT ACROSS
EASTERN OKLAHOMA THIS AFTERNOON AND INTO WESTERN ARKANSAS THIS EVENING.
AT MIDDAY...THE FRONT EXTENDED FROM EASTERN KANSAS TO CENTRAL OKLAHOMA
AND SOUTHWEST INTO TEXAS.  THIS FRONT WILL PROVIDE A LINE OF CONVERGENCE
FOR INITIAL THUNDERSTORM DEVELOPMENT.

.DISCUSSION...
BY MID AFTERNOON...THE FRONT IS EXPECTED TO BE BETWEEN TULSA AND
OKLAHOMA CITY...PROVIDING CONVERGENCE FOR THUNDERSTORM INITIATION.
HOWEVER...VERY WARM AIR ALOFT WILL INHIBIT DEVELOPMENT UNLESS SURFACE
TEMPERATURES BECOME QUITE WARM...PERHAPS EVEN INTO THE LOWER 90S.  THE
BEST AREA FOR THAT TO HAPPEN WILL BE MAINLY SOUTH OF INTERSTATE 40...AND
AFTER 3 PM.

THE AIRMASS IS QUITE UNSTABLE WITH LIFTED INDICES AROUND -10 AND CAPE
VALUES OVER 4000.  THIS INDICATES THAT ANY THUNDERSTORMS THAT CAN
DEVELOP WILL BECOME SEVERE QUICKLY.  HODOGRAPHS INDICATE THERE IS ALSO
SUFFICIENT WIND SHEAR FOR THE STORMS TO BECOME SUPERCELLS.  HOWEVER...
LARGE HAIL...OVER 2 INCHES IN DIAMETER...AND DAMAGING WINDS WILL BE THE
MAIN THREAT.  THE SEVERE THREAT IS EXPECTED TO END OVER EASTERN OKLAHOMA
THIS EVENING...AND OVER NORTHWEST ARKANSAS BY AROUND MIDNIGHT.

.EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION...EMERGENCY
MANAGEMENT AGENCIES ACROSS EASTERN OKLAHOMA SHOULD BE PREPARED TO
ACTIVATE BY MID AFTERNOON.  EMERGENCY MANAGEMENT AGENCIES IN  NORTHWEST
ARKANSAS SHOULD PREPARE FOR ACTIVATION LATER THIS AFTERNOON THROUGH THE
EVENING.

Special weather statement, Jun 1, 1:15 PM CDT, 3 hours 57 minutes before

ARZ001-002-010-011-019-020-029-OKZ049-053>076-021100-

EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
115 PM CDT TUE JUN 1 1999

THERE WILL BE A RISK OF SEVERE THUNDERSTORMS OVER EASTERN OKLAHOMA AND
NORTHWEST ARKANSAS THIS AFTERNOON AND THIS EVENING.  IN OKLAHOMA...THE
AREA OF CONCERN WILL GENERALLY BE SOUTH AND EAST OF INTERSTATE 44...
BEGINNING AS EARLY AS MID AFTERNOON.  IN ARKANSAS THE THREAT WILL BE
LATE THIS AFTERNOON AND THIS EVENING...ENDING BY AROUND MIDNIGHT.

.SYNOPSIS...
AN UPPER LEVEL LOW PRESSURE AREA WILL HELP PUSH A WEAK COLD FRONT ACROSS
EASTERN OKLAHOMA THIS AFTERNOON AND INTO WESTERN ARKANSAS THIS EVENING.
AT MIDDAY...THE FRONT EXTENDED FROM EASTERN KANSAS TO CENTRAL OKLAHOMA
AND SOUTHWEST INTO TEXAS.  THIS FRONT WILL PROVIDE A LINE OF CONVERGENCE
FOR INITIAL THUNDERSTORM DEVELOPMENT.

.DISCUSSION...
BY MID AFTERNOON...THE FRONT IS EXPECTED TO BE BETWEEN TULSA AND
OKLAHOMA CITY...PROVIDING CONVERGENCE FOR THUNDERSTORM INITIATION.
HOWEVER...VERY WARM AIR ALOFT WILL INHIBIT DEVELOPMENT UNLESS SURFACE
TEMPERATURES BECOME QUITE WARM...PERHAPS EVEN INTO THE LOWER 90S.  THE
BEST AREA FOR THAT TO HAPPEN WILL BE MAINLY SOUTH OF INTERSTATE 40...AND
AFTER 3 PM.

THE AIRMASS IS QUITE UNSTABLE WITH LIFTED INDICES AROUND -10 AND CAPE
VALUES OVER 4000.  THIS INDICATES THAT ANY THUNDERSTORMS THAT CAN
DEVELOP WILL BECOME SEVERE QUICKLY.  HODOGRAPHS INDICATE THERE IS ALSO
SUFFICIENT WIND SHEAR FOR THE STORMS TO BECOME SUPERCELLS.  HOWEVER...
LARGE HAIL...OVER 2 INCHES IN DIAMETER...AND DAMAGING WINDS WILL BE THE
MAIN THREAT.  THE SEVERE THREAT IS EXPECTED TO END OVER EASTERN OKLAHOMA
THIS EVENING...AND OVER NORTHWEST ARKANSAS BY AROUND MIDNIGHT.

.EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION...EMERGENCY
MANAGEMENT AGENCIES ACROSS EASTERN OKLAHOMA SHOULD BE PREPARED TO
ACTIVATE BY MID AFTERNOON.  EMERGENCY MANAGEMENT AGENCIES IN  NORTHWEST
ARKANSAS SHOULD PREPARE FOR ACTIVATION LATER THIS AFTERNOON THROUGH THE
EVENING.

Local storm report, Jun 1, 4:54 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
454 PM CDT TUE JUN 01 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0453 PM    LOCUST GROVE              OK    1.75 INCH HAIL
06/01/99   MAYES                           EMERGENCY MANAGEMENT
                                           REPORT

Local storm report, Jun 1, 4:54 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
454 PM CDT TUE JUN 01 1999

TIME(CDT)  .....CITY LOCATION..... STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0453 PM    LOCUST GROVE              OK    1.75 INCH HAIL
06/01/99   MAYES                           EMERGENCY MANAGEMENT
                                           REPORT

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 1, 4:32 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	43 min
Jun 1, 4:45 AM CDT	Tornado Warning	TSA	Okfuskee	45 min
Jun 1, 5:03 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okmulgee	57 min
Jun 1, 5:12 AM CDT	Tornado Warning	TSA	McIntosh	63 min
Jun 1, 5:53 AM CDT	Tornado Warning	TSA	Haskell, Pittsburg	67 min
Jun 1, 6:04 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	41 min
Jun 1, 6:41 AM CDT	Tornado Warning	TSA	Haskell, LeFlore	64 min
Jun 1, 3:56 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes	49 min
Jun 1, 4:25 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	35 min
Jun 1, 4:47 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes	43 min
Jun 1, 5:06 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	39 min
Jun 1, 5:36 PM CDT	Tornado Warning	TSA	Cherokee, Muskogee, Wagoner	54 min
Jun 1, 6:22 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	48 min
Jun 1, 6:24 PM CDT	Tornado Warning	TSA	McIntosh, Muskogee	66 min
Jun 1, 6:56 PM CDT	Tornado Warning	TSA	Haskell	49 min

Nearby

Tornado Warnings in Oklahoma, 1999 Every tornado warning in 1999 Tornadoes in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.